Valved coupling for lubricators



H. H. HOUGHTN.

VALVED CQUPLING FOR LUBRICATORS.

APPLICATION man MN. 1?.. 1920.

1 ,342,678. Patented June 8, 1920.

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HerberfHHUlg/zfo/ llubricant receiving memberandthe'lubris,

PATENT OFFICE.

HERBERT H. HOUGHTON, 0F FILEB, IDAHO.

vALvnn coUrLINe non I .Unnrcamons To all 'whom z'tmay concern:

Be it known that I, HERBERT H. HOUGH- TON, a citizen of the UnitedStates, and a resident of Filer, in the county of Twin Falls and Stateof Idaho, have invented certain new land useful Improvements in ValvedCouplings forLubricators, of whichtlie following is a full, clear, andexact descrlptron, reference being had to the accompanying drawing,formmg part of this 'specication My invention relates primarily to thatclass of devices which are intended to be used in connection withthelling or charging of grease cups for automobiles and other machinerywherein the lubricant is supplied under pressureeto'the end thatproper'lubrication'of the bearing .will be insured.

One object of my inventionis to provide means whereby the pressure onthe supply of lubricant ma b'e maintained whether the connection to t egrease cup is established :Iorthe transfer of lubricant or whether thedevice is disconnected vfrom thev grease cup. L Another object of myinvention is the provision of means for sealing the joint between thegrease cup, and the" supplying connection to the end that all ofthelubricanthandled by the device will be maintained either in thedevice or transferred tothev grease cup without loss by leaka with itsconsequent 'ill efects both tot 'e hands and 'apparel of the user and tothe appearance of the machine. i A

Another object of my invention l,is the provisionof a structure whichmaybe 'used directly upon a com ressi'n grease gun or upon the end of aexible or other lubricant conduit.

Other objects of my Vinvention willappean and be described in thespecification. p

The novelty of my invention will be here.- inafter more fully set forth'and specifically pointed outin the claims.

In the accompanying draw' Figure 1 is a sectional elevalltii of a deviceembodying` my invention adjacent' to. a grease cup adaptedto be suppliedwith lubricant.-- -1 V Fig. 2 is a sectional elevation-'ofthe partsshown in Fig. 1, the su pl. gconnection being shown engaged wittgdpgrease cup or cant transfer passages opened.

. Specicaticn of Letters Patent. Application led January 17, 1920.Serial No. 351,984.

, provided with lugs 9 rI he same numerals of reference are used toindicate identical parts in all the figures.

For the purpose of illustration to show one form of mechanism in whichmyinventlon may be embodied, I have shown a member which I will callaconnection and designate by the numeral 1.

Patented June s, 1920. 4

This connection comprises -a cylindrical portion 2a11d a second largercylindrical portion' 3 which is threade to receive the end of a plug 4,the other end of which as shown at v5 is adapted to be either connectedto the head 6 of an ordinary compression grease un, or to any other formof lubricant sup ying conduit. The cylindrlcal portion 2 of theconnection 1 is provided with cam acting slots 7 which are somewhatinthe form of a bayonet joint by means of which the connection 1 may besecured to any suitable W ich co-act with the slots 7 for purposes tovbe presentlyA described.

A-valve 10 is mounted at the juncture of the portions 2 and 3 of theconnection 1 and is normally held upon its seat by any suit- A ablespring 11,the valve carrying an extension 12'which carries a head 13upon -which a 'cup leather 14 is mounted, the cu leather 'fitting withinthe` borer o1"` theA cy 'ndrical portion 2. The cup leather 14 has acentral opening 15 and` communicates with lubricant passages 16whlclrextend through the The rease cup 8 is `preferably provided with aall check valve 17, he1d to its'seat by a spring 18 which `,bearsagainst the, pin` 19, the construction being such that the ball Valve 17may be opened,as shown in Fi .4 2, by the pressure of the lubricantwhiclgil is, forced into the grease cup, the opposite end A of thegrease cup being. threaded as at 420` to serve as ay means forattachment lto the machinery which itis desired to lubricate.

The operatin of the device iszas follQWrS,

assuming the parts to be in the position shown in Fig. 1 and assuminthat lubri- Qcant under pressure is supplie to the portion @ofconnection 1 throughany suitable conduit 21 in the plug 4, an

grease cup 8 which isY also assuming thatthe greasecup is attached to abearing "or Otherpartof machinery which itis def sired to lubricate; yAplacing the connection 1 over tlie greasel cup 8Y and causing the lugs 9to enter the slots 7 the pxarts ma be brought nearly to the position sown in ig.

bricant causesv a flow past the valve 10 through the passa er 16 andopening 15d` forcing the ball valve 17 from its seat an transferring aquantity of lubricant to the cup 8, the relative positions of the partsList described is such that when the lugs 9 gin to enter the cam portionof the slots 7, the end of the grease cup or lubricant receiving member8 just comes in contact with the cup leather 14, and that when theconnection 1 is turned to cause the lugs to travel in the cam portion ofthe slots 7, sufficient movement between the parts is-produced to forcethe cup leather and the parts which carry it as well'as the valve 10toward the plug 4 thus raising the valve from its seat as shown in Fig.2. Itis to be observed that the pressure of the lubricant as it fillsthe space between the dis charge side of the valve 10 and the end of thereceiving member 8 becomes eifective on the inner diameter of thecylindrical ortion of thecup leather 14 to expand the eather and causeit to seal the passage through the device against leakage at the outerwall of the cylindrical ortion 2, and also that the face of the cupeather acts asa seal for the joint between the end ofthe lubricantyreceiving member 8 and the lubricant passage so that all of thelubricant which passes through the device is forced to enter thelubricant receiving member, the outside of the lubricant receivingmember and the inside of the cylindrical portion 2 of the connecti'on 1which embraces the lubricant receivin member are maintained dry and freefrom ubricant, the only exposed ortion upon which any of the transferredlu ricant may remain being that portion of the ball check valve 17 whichprojects from the member 8 when the ball valve is seated.

To'stop the flow of thelubricant throu h the devi it is only necessar toreverse t e previous y described metho of connecting the parts together,whereupon the valve 10 will become seated and the ball check valve 17will also-be forced to its'seat. It is to be observed` that the pressureexerted upon the supply of lubricant may be maintained without danger ofthe loss of any of the lubricant with the result that the operator maconnectV or disconnect the device from t 'e lubricant receiving memberwiithou't the necessity of varying the pres his suppl of lubricantthereby effecting a materia saving in the time necessary to properlylubricate any kind "of ma- 4 chine, `suoli as would be consumed were itnecessary to first establish the connection to the lubricant supply,then a ply the pressure for the transfer, then re ease the pres,- sure,and then disconnect the device.

Having thus fully described my invention, I claim: 5

1. In a lubricator the combination of a lubricant receiving member, alubricant delivery connection, a pressure retaining valve in saidconnection, means coperating between said connection and said receiving'member whereby said connection may be attached to said member, and meanscoperating between said valve and said receiving member whereby whensaid connection is attached to said receiving member said valve will beopened to permit the assage of lubricant into the receiving menig) sealfor the joint between the receiving member and the connection.

2. In a lubricator the combination of a lubricant receiving memberprovided with means for attachment to machinery, a lubricant transferconnection, a pressure maintaining .valve in said connection, meanscooperating Ibetween said connection and said lubricant receivingmemberwhereby said connection may be attached thereto, means coperatingbetweenthe end of the lubricant receiving member and the pressureretaining valve for opening the latter er, and a when the connection isattached to the lubri- 'cant receiving member, a seal eoperating normaly holding said valve to its seat, and

means coperating with a portion of the lubricant receiv` member and thevalve for' opening the va ve in the connection, said- 'means comprisingin'part a seal for the 'oint between the connection and the' lubricantreceiving member wherebylubricant will be transferred to the receivingmember under pressure.

4; In a lubricator the combination of a `connection forsupplying'lubricant under pressure, a pressure retaimn valve in saidconnection, means 'for normal y holding said valve to its seat, a valveopening head, a

lubricant passa e through said head, a seal4 carried by sai head andprovided withla lubricant passa e therethrough, a lubricant receivingmem er provided with a check valvencoperating connectionsbetween saidreceiving member and said connection for iso' 'lubricant transferconnection, means sup lying lubricant imder pressure whereby salconnection ma be attachedto said receiving member an whereby when saidconneetion is attached to said receiving member l a portion of thelatter comes in contact with the' seal carried b the valve opening beadand moves the sea to seal the joint between the connection and thereceiving member and opens the valve to permit the transfer pressure tothe receiving a pressure retaining valve 1n said connec-v tion, meansfor normallyr holding said valve to its seat, a valve opening head, aseal carried thereby, a lubricant passage through said seal and head, alubricant' recelving member, a check valve in said member, a cam actingjoint between said receiving member and said transfer connection wherebwhen said transfer connection 1s attac ed to eeaicl receiving member thecam portion of the joint will compress the seal to seal the jointbetween the parte and open the valve to permit a transfer of lubricantunder pressure to the receiving member and whereb when the parts aredisconnected the lubricant so transferred will remain in the receivingmember and. the valve in the transferring connection will be closed.

HERBERT H. HOUGHTON.

